Outside mounted air conditioning unit



Dec. 1, 1953 w. F. BORGERD OUTSIDE MOUNTED AIR CONDITIONING UNIT Filed May 5, 1951 2 Sheets-Sheet l ,1 nflenfor 16 William 1 .Bor erd Dec. 1, 1953 w. F. BORGERD OUTSIDE MOUNTED AIR CONDITIONING UNIT 2 Sheets-Sheet 2 Filed May 5, 1951 512/ William F Patented Dec. 1, 1953 UNITED STATES OFFICE 2,660,867 OUTSIDE MOUNYI'PIZEVQ IR CONDITIONING William F. li'orgerdi..Ev nsvilkn Ind assign); it International. Harvester Company; a. corpora-1 tion of. New J first? Appficati'omMay 5; 1951, Serial. No: 2,24 ,782. 8 Claims. (Cl.v 62-129i This invention relates generally to an air conditioning unit and .more particularly to amalr conditioning unit mounted outside ar-oom above. a.

window.

One popular design of a roomair conditioner.- Which has been developed is the win'dow'typeunit. which fits in the lower portion of a. window and- Another popular is secured to the window silli design theiconsole type. unit whichis disposed within a. roomadjacent a window'with' a cabinet Bothtvpes have .oi the cramped-y to the operating cost of th unit...

sate ontothe floor, and because the running machinery therein cannot besatisfactorily insulated fromwthe room-.. However, the; console model i usually left in placedurine the.

winter months since'removalthereof is made diiiicult by the weight and bulk of the unit; The,

present invention providesanairwconditioning; unit which overcomes the-above mentioneddisadvantages of the window type and consoletype units One object. of the invention is to provide an air conditioning unit which is secured to an ax-- terior portion of minimum height extending int a. room wine dow.

Another object is to prov-idea room aira-condi tioner having the condenser so located that outside air may be conveniently circulated .thereover,

so as to provide excellent cooling thereof.

Another object isv to provide a room air'cone ditioner having a cabinet of such size that the refrigeration system and associated parts may be located therein without overcrowding Another object is to provide-a window mount ed air conditioner, which may be completely serviced from. Outside theroom being conditione Another object is to provideia. room air conditioner so. located that a minimum amount of operating noise from the refrigeration system and'air circulating fans will beproiectedintothe roombeing conditioned.

of the w ndow and: leaks. For these reasons the. unit. the fall and replacedinrthe springthus adding the expense Iorsuch removal The console-v model is objectionable because ofthe, floor spaceit requires, because it occasionallyzd ip condena nQise-of. the

of a wall with; an air passageway tion. of the'room'.

top portion. of :the

Another objectisto provide a-window-mounted. air-conditioner with means for eifectivel'y removing evaporator condensate'therefrom without the necessity of plumbing equipment.

Another object. isto provide a room air conditioner.with damper means for circulating'outside alr into. the room being conditioned.

Another object: is to provide a window mounted air; conditioning. unit so. positioned .in relation 1 to therwinoowthat. thev windowsash may be. com-- pletely closed withoucremoving any part of the unit.v

Anothenobjeot is toprovlde a splitter bar which will direct warmroom air from the lower porcabinet: into the upper portion of theroom'.

Anotherobjectxisuto provide a splitter bar whichis pivotally secured within the-room so that it. can, be rotated from operating position to. allow complete closing of :the window;

Another objectis to'provide an air conditioner mounted'on the exteriorwall of a room above a Window Withan'elbow section projecting intothe Window-which provides communication between the room and cabinet.

Another object. is: to. provide an air conditioner which is located above a window so that it shields the window and:.reducesheat. entrance into the room in the, same manner as a window awning. Further objects and advantages of the-invention; will become. apparentas the following tiescription proceeds; and thefeatures of novelty which: characterize theinvention will bepoi-nted out with particularity in' the claims annexed-- to and forming-apart of this specification. For a.--be.tter understanding of the inventiom refei encemay be hadto the accompanying" drawings in which:

Figure 1, is. a. sectional view or an air condi tioning unit taken along. line I:- -.-I of Figure- 2; Figure 2 is agsectional view taken along'lihe 22; of Figural, with portions broken away.

Figure 3 is.. anrelevationa1 view ofth'e upper portion. of theiinner window casing showing the Referring particularly-tome drawings, the air conditioning unit It iss-hown mounted above a window H .on the exterior portion of a room wall IZ., Thewindow I i comprises generally-a sash l3 and pane i4 mounted-within a window casement into. the air conditioner oahinetand which willidirect cooled" air from the |5. The unit is provided with a frame 15, shown in part, and an outer casing |1 comprising vertical end walls :3 and l5, front wall and a top wall 2| having a portion which slopes downwardly toward the front wall. The unit is positioned adjacent room wall 12 with bolts 22 extending through frame It and fastened in the wall in order to secure the unit above the window. Resilient pads 23 are positioned between the room wall I2 and the unit H3 in order to isolate vibration,

The space enclosed by casing 11 is divided into a high side compartment 24 and low side compartment 25 by an insulated partition 26 which comprises spaced apart wall members 21 and 28 with insulating material 29 therebetween. The partition 26 is provided with a front wall 30, end walls 3| and 32, back wall 33, and bottom wall 34 which enclose and insulate compartment 25. A

lid 35 is secured to back wall 33 by hinges 43 and is adapted to close the top of compartment 25. Back wall 33 is provided with a duct or elbow section 36 comprising top wall 31, bottom wall 38 and side walls 39 and 4B. The duct 36 extends into the window and terminates adjacent window sash |3 in slightly spaced relationshi thereto. A gasket 4| is secured to the duct in order to seal between the sash and the duct. The end of duct 36 adjacent to the window is open so that air may be circulated from the room into low side compartment 25 when the sash i3 is lowered.

An opening 42 is provided in the bottom wall 44 of high side compartment 24 and a condenser 45 is positioned over this opening. Secured to partition wall 21 is a bracket member 45 to which an electric motor 41 is fastened. The motor shaft 48 carries a fan 49 which pulls outside air up through the condenser 45 and discharges it through an opening 50 provided in the top wall 2| of casing |1. Removably secured in opening 50 is a screen 5| which will prevent foreign matter from falling into the compartment 24. Secured to bottom wall 44 adjacent condenser 45 is a motor-compressor unit 52 which will be cooled by the air circulated by fan 49. Casing I1 is removably attached to frame I6 so that it may be removed for servicing of the high side members.

The low side compartment 25 and elbow section 36 are divided into an intake passageway 53 and outlet passageway 54 by a dividing wall 55. The outer edge 56 of the wall 55 is spaced from the front wall 35 of partition 55 in order to provide a connection between the passageways. Po sitioned adjacent edge 56 in outlet passageway 54 is an evaporator 51 which extends across the width of the passageway. Positioned under the evaporator 51 is a trough or tray 58'to which a tube 65 is connected. The tube 55 extends through front wall 35 of the partition 26 and slopes downwardly with the lower end 6! positioned slightly above condenser 45. As is well known in the art, water from the air being cooled will condense on the cold surfaces of an evaporator. In the illustrated embodiment, any water condensedon evaporator 51 will drip into tray 7 58 from which it will drain through tube 56 onto the condenser 45. As the water spreads over the surface of the condenser 45, it will absorb heat therefrom and be vaporized, then picked up by the air stream of fan 49 and discharged through opening 55. If the water is not entirely vaporized by the condenser 45, it will drip harmlessly to the ground surface therebelow. In this manner the condensate is effectively removed and is also utilized in cooling of the condenser 45.

Positioned across inlet passageway 53 is a filter element 52 which will clean the air of any objectionable foreign matter. Two spaced apart blowers 53 and 54 are secured in outlet passageway 54 with an electric motor 55 having a double end shaft for driving the blowers. The motor 55 is positioned between the blowers and the base 61 thereof is secured to back wall 33 of the parti tion 25. Enclosed by blower casings 65 and 55 are rotors 15 and 1| respectively which are mounted on shaft 5'6 and are supplied with fan blades for pulling air through a circular air inlet openin 12 provided in an end wall of each casing. The blowers 53 and 54 discharge into a common outlet 13 having top wall 14, back wall 15, bottom wall 16, and side walls 11 and 15 which flare outwardly to meet the side walls 39 and 4|! respectively of elbow section 33. Louvers 19 are removably secured to side walls 39 and 45 of elbow section 36 in outlet passageway 54. Also removably secured to these side walls 39 and 42! in inlet passageway 53 are louvers 85. A rectangular shaped opening 8| is provided in the bottom wall 34 of partition 25 in which a damper 82 is pivotally secured by pins 83 and 84. A han- (ile 85 is attached to the damper 82 which may be reached from within the room by removing louvers 85 and reaching into inlet passageway 53.

Positioned on the inside of the room is a splitter bar 86 having pins 81 and 38 which are pivotally secured within brackets 89 and 90 fastened to window casement l5. When in operating position, as shown in full lines in Figure 1, the inner edge 9| of the splitter bar 81 is adjacent divid- 1 ing wall 55 and rests upon pins 92 and 93 which are fixedly secured to the window casement I5. In this position the splitter bar acts as a continuation of the dividing wall 55 and aids in dividing and directing the air stream flowing between the room and unit Ill. The lower surface 54 of the splitter bar 86 is curved downwardly in order to direct air from the lower portion of the room into inlet passageway 53. The upper surface 95 of the bar 85 is curved upwardly so that the air discharging from the outlet passageway 54 will be directed into the upper portion of the room from where it will drop downwardly across the entire room. If sash I3 is to be raised, splitter bar 86 is rotated to the position shown by dotted lines in Figure 1 so that the sash may be closed without the removal of any part of the air conditioning unit H].

The refrigeration system will be charged with a suitable refrigerant which will be compressed by motor-compressor unit 52 and passed through tube 96 to condenser 45 where it will be cooled by the outside air being passed over the condenser by fan 49. The refrigerant is conveyed from condenser 45 by capillary tube 91 to evaporator 51 where it will extract heat from the room air being circulated over the evaporator 51 by way of passageways 53 and 54. The refrigerant is then returned to the motor-compressor unit 52 by tube 98 to complete the refrigeration cyc e.

The air conditioning unit In can be completely assembled by the manufacturers and then shipped to the proper location where it can be easily and quickly secured to the wall l2 by bolts 22. After proper electrical connections are made and sash l3 opened, the unit is ready for operation. It is contemplated that suitable controls (not shown) be mounted within the room in any easy to reach location. With damper 82a.

in closed position as shown' in solid lines in Figure 1, blowers 63 and 64. will; draw air into inlet.

properly cooled by outside air circulated by-f'an 49. The high side members will be cooled even when the fan 49 is not'operating by natural air movements through the chimney shaped condenser compartment 24. Even distribution of the cooled air within the room by splitter bar 86. Top-curved surface 95- will direct the cold air from outlet passageway'54 into the upperportion of the room near the cciling from where it will drop to lower portions of the room, thus setting up natural convectional air currents across the room to insure'uniform cool air delivery with a minimum amount of objectionable drafts.

Byopening damper-82 to the position shown by dotted lines in Figure 1 and operating only motor 55, fresh air will be filtered and'circulated into the room. Bypartially opening the damper 82, with the motor 65 operating, the air being cooled will be a mixture of return room air and fresh air and the percentage of each can be controlled bypropcrly setting the damper.

Splitter bar 86 will direct the air entering and leaving the room in the manner explained heretofore and will also blend in neatly'with the window casement l1. Louvers 19 and 80 will also aid in producing proper air circulation and may be made adjustable if desired. Window sash 13 may be raised and the window completely closed by merely rotating splitter bar 86 to the position shown by dotted lines in Figure 1. This is adistinct advantage over the usual type of window air conditioner which must be removed before the window is closed. With the unit It] located above the window II as illustrated, it will shield the window and reduce heat entrance into the room in the same manner as a window awning. By constructing the outer casing l1 to have the appearance of an awning, the unit will present a neat appearance when attached to a home. The elbow section 36 has a height of only a few inches so that it obstructs only a small portion of the window II.

Servicing the unit It can be completed from outside the house without the necessity of entering the room. By removin casing l1, access to all parts of the high side compartment 24 is provided. Means for locking the casing I! to the frame [6 (not shown) may be provided to prevent unauthorized removal or tampering of the unit. With casing I! removed, lid 35 can be opened in order to provide entrance into the low side compartment 25. Filter 62 may be reached by removing louvers 80 and reaching through inlet passageway 53, or by opening damper 82 and reaching through opening 8|.

Although the unit It] has been shown in connection with a double hung window, it will be apparent that it is adaptable for use with other types of windows. From the foregoing disclosure it is seen that a simple and compact construction is provided which is economical in will result from the manner in which the air streams are directed refrigeration system and 6, manufacture andrmaintenancel The unitis, lo catedin. relationship to a :window so that it. proe tects the window, rather than obstructing it, with all partslocatedon the exterior wall of the room so that all parts are properly cooled and the (noise from the running machinery is. insuv lated from the room. The air andnoise from the high side compartment are discharged up? wardly so that they will not be projectedonto a? neighboring building.

It should be understood that changes and mod ifications in the form, construction, arranges ment. and combination of parts may be maderand substituted for those herein shown and described without departing from the spirit of the inven tion as set forth in the appended claims.

What is'clairned is:

1. The combination'of an air conditioning 'unit' comprising a casing: positioned outside a room above awindow; a duct which projects into said window and terminates adjacent a sash so that the-sash can be opened and drawing room air through said duct into said casing,, cooling the air room through said duct; and a, splitter bar positioned in front of said duct in order to direct warm, air from the lower portion of the'room into the duct and cold air from theduct into the upper portion of the room.

2. The'combination of an air conditioning unit comprising a cabinet which projects into awindow of a room; an opening provided in said cabinet which communicates with said room; through said opening' into said cabinet, cooling the air therein and means for drawing room air returning it-through said opening to the room; a splitter bar positioned across said window having an upper-surface; which directs air'leaving said opening toward the ceiling of said room, and a lower surface which directs air from the floor of said room into said opening.

3. The combination of an air conditioning unit having a casing positioned outside a room above a window; .a. duct which projects into said windew and provides communication between said casing and room; means for drawing room air through said duct into said casing, cooling the air therein and returning it through said duct to the room; and a splitter bar pivotally secured within the room so that it can be rotated away from said window when the window is closed; said splitter bar having an upper curved surface which directs air leaving said duct toward the ceiling of the room, and a lower curved surface which directs air from the floor of said room into said duct.

4. The combination of an air conditioning unit comprising a cabinet located outside a room above a, window; said cabinet projecting into said window and terminating adjacent a sash of said window so that said sash may be opened and closed; an opening provided in said cabinet which communicates with said room when the sash is opened; means for drawing room air through said opening into said cabinet, cooling closed; means forand returning itto the comprising a casing having means for securing it to an exterior wall surface of a room above a window; an insulated partition which divides the cabinet into a high side compartment and a low side compartment; a duct which projects into the upper portion of the window and provides communication between said low side compartment and said room; an evaporator positioned in said low side compartment; a condenser and compressor positioned in said high side compartment; means for circulating room air over said evaporator; and a splitter bar pivotally secured within said room for directing warm air from the lower portion of the room into said duct and cold air from the duct into the upper portion of the room.

6. The combination of an air conditioning unit comprising a casing having means for securing it to an exterior wall surface of a room above a window; an insulated partition which divides the cabinet into a high side compartment and a low side compartment; a duct which projects into the upper portion of the window and provides communication between said low side compartment and said room; an evaporator positioned in said low side compartment; a condenser and compressor positioned in said high side compartment; means for circulating room air over said evaporator; a splitter bar pivotally secured within said room for directing warm air from the lower portion of the room into said duct and cold air from the duct into the upper portion of the room; and a fresh air damper in said low side compartment for admitting outside air thereinto.

7. An air conditioning unit comprising a casing removably secured to an outer wall above a room window; said casing projecting outwardly from the wall so that it shields the window; an insulated partition which divides the casing into a high side compartment and a low side compartment; said high side compartment provided with openings through which outside air is circulated for cooling a condenser and compressor located therein; said low side compartment provided with an evaporator and a duct which extends into said window; a dividing wall which divides the low side compartment and high side compartment into an inlet passageway and outlet passageway; and a splitter bar which cooperates with said dividing wall to direct air from the room into said inlet passageway and air from the outlet passageway into said room; said splitter bar being rotatively mounted within said room so that it is adapted to be rotated away from said dividing wall to allow closing of the window.

8. An air conditioning unit of the character adapted for mounting exteriorly of the window opening of a room, comprising: a casing adapted for mounting on an exterior wall; a longitudinally extending insulated partition that divides the casing into a high side compartment and a low side compartment; a horizontally extending duct that connects with said low side compartment and is adapted to extend into the top portion of a window opening; means, including a substantially horizontally disposed and longitudinally extending partition that extends longitudinally throughout the length of the low side compartment and the horizontal duct connected therewith, for fashioning an inlet passageway and an outlet passageway vertically spaced therefrom that provides communication between said casing and a room to be conditioned; a condenser, compressor and means for circulating air from outside the room thereover disposed in said high side compartment; an evaporator disposed in said low side compartment; and means for circulating air from the room through said inlet passageway, over said evaporator and back into the room through said outlet passageway.

WILLIAM F. BORGERD.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,247,276 Chase June 24, 1941 2,324,313 Meyerhans July 13, 1943 2,333,374 Guthrie Nov. 2, 1943 2,357,362 Smith Sept. 5, 1944 2,519 086 Eberhart Aug. 15, 1950 

